I went to buy a dual monitor video card today because I was under the impression that if I buy a dual video card and keep my old video card in the computer, then I can hook up three monitors total. But the guy at the store said that my old video card will shut off after I install the dual video card and the computer will not read the old card any longer and I will only be able to hook up 2 monitors with the new dual video card and the old video card will become nonworkable. Does anybody have any experience with dual video cards and hooking up 3 monitors? Or is the guy at the store right and I will only be able to hook up two? I was also thinking of buying just another video card and installing that one in addition to the one I already have, but the guy said the old one will not work. So then I didn't buy it, because the whole purpose of me getting a second video card is to have two or more monitors. Anybody have any experience with this? I really wanted 3 monitors with the dual card.